Dr Noori Moti-Joosub Dermatologist Laserderm, Dunkeld/ DGMCAcne vulgaris is a self-limited disorder...
Transcript of Dr Noori Moti-Joosub Dermatologist Laserderm, Dunkeld/ DGMCAcne vulgaris is a self-limited disorder...
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Dr Noori Moti-Joosub Dermatologist
Laserderm, Dunkeld/ DGMC
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Acne vulgaris is a self-limited disorder of the pilosebaceous unit that is seen primarily in adolescents. Most cases of acne present with a pleomorphic variety of lesions, consisting of comedones, papules, pustules and nodules. Although the course of acne may be self-limiting, the sequelae can be lifelong, with pitted or hypertrophic scar lifelong.
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Almost every teenager can experience acne to a certain degree during adolescent years.
Boys>girls
Tend to “grow out of it” in early 20s
Females can continue until post-menopausal
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Hair follicle has a hair and sebaceous gland. The gland produces too much oil which becomes clogged with keratin, bacteria and cells.
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Whitehead
Blackhead
Papule Pustule
Cyst
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Excoriations (picked or scratched spots)
Erythematous macules (red marks from recently healed spots, mostly in fair skin)
Pigmented macules (dark marks from old spots, mostly in dark skin)
Scars
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HYPERTROPHIC ATROPHIC
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Normal physiological reaction in puberty Disease of the ovaries ◦ Polycystic ovarian syndrome ◦ Benign or malignant ovarian tumors
Disease of the adrenal gland ◦ Partial deficiency of the adrenal enzyme 21 Hydroxylase ◦ Benign or malignant adrenal tumors
Disease of the pituitary gland ◦ Cushing’s syndrome due to excessive adrenocorticotrophic
hormone ◦ Acromegaly due to excessive growth hormone production ◦ Adenoma of the adrenal gland especially prolactinoma
Obesity and the metabolic syndrome Medication-phenytoin,steroids,barbiturates,OCPills
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Patients with acne often have increased production of sebum, hence oily skin. This may be because of:
High overall levels of sex hormones (mainly the androgen, testosterone).
Hyperandrogenism in females
Increased free testosterone because of low levels of circulating sex-hormone-binding-globulin (SHBG).
More active conversion of weaker androgens to stronger androgens such as dihydroxytestosterone (DHT) by the enzyme 5-reductase within the skin.
Higher sensitivity of the skin to DHT.
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Stress
Diet
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High GI diet
ACNE
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Mild: Comedones
Moderate: Papules, pustules
Severe: Nodules, cysts, conglobate lesions
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Grade 1: Comedones only
Grade 2: Inflammatory papules
Grade 3: Pustules
Grade 4: Nodules, cysts, conglobate lesions
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Unpleasant form of nodulocystic acne Interconnecting abscesses and sinuses, which
result in unsightly hypertrophic (thick) and atrophic (thin) scars.
There are groups of large macrocomedones and cysts that are filled with smelly pus.
It is occasionally associated with hidradenitis suppurativa,
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Allergic reaction to P. acne Abrupt onset Inflammatory and ulcerated nodular acne on
chest and back Severe acne scarring Fluctuating fever Painful joints Malaise (i.e.. the patient feels unwell) Loss of appetite and weight loss Raised white blood cell count.
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Infantile acne Generally affects the cheeks, and
sometimes the forehead and chin, of children aged six months to three years.
More common in boys and is usually mild to moderate in severity. In most children it settles down within a few months.
The acne may include comedones inflamed papules and pustules, nodules and cysts. It may result in scarring.
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The cause of infantile acne is unknown. It is thought to be genetic in origin. Hormone abnormalities in older children
with acne may be associated with the following conditions:
Congenital adrenal hyperplasia Cushing's Disease 21-Hydroxylase deficiency Precocious puberty Androgen-secreting tumors
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Acne can be effectively treated, but response is usually slow
Face washing-rock of management Where possible, avoid excessively humid
conditions Ultraviolet light helps Abrasive skin treatments can aggravate
acne Try not to scratch or pick the spots
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Important part of acne treatment
Wash face once or twice a day
Gentle cleansers
Foam cleansers best
Exfoliative cleansers can be used
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Often not needed in acne
Do not dry skin out
Mattifying moisturisers
Often extra moisturisers needed with Isotretinoin treatment
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Not necessary
Use non-alcoholic type
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Often too oily
Use non-comedogenic types
Shade-seeking behaviour
Protective clothing
With Isotretinoin treatment, sun protection imperative
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Liquid foundation better than powders
Powders block pores
The more you use, the worse it is
Make sure adequately removed
Non-comedogenic
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Wash affected areas twice daily with a mild cleanser and water or an antiseptic wash.
Acne products should be applied to all areas affected by acne, rather than just put on individual spots.
They often cause dryness particularly in the first 2-4 weeks of use. This is partly how they work. The skin usually adjusts to this.
Apply an oil-free moisturizer only if the affected skin is obviously peeling.
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Anti-bacterial
Antibiotics
Retinoids
Other
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Benzoyl peroxide 2.5-10% wash, gel, cream
Gel: drying
Cream: tolerant
Wash: Chest and Back
MOA: kill bacteria, dry up oil, slough dead skin cells
Problem: dryness, irritation, flakiness
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Erythromycin 4% and Zinc 1,2%
Clindamycin
MOA: anti-inflammatory, kill bacteria
Problem: Resistance Gram negative folliculitis
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Adapalene 0.1% Photo-stable Gel: drying Cream: more tolerant Tretinoin 0.1-0.25% Isotretinoin 0.05% MOA: Promote cell turnover, prevent plugging
of hair follicles Problems: dryness, irritation, redness, sun-
sensitivity
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Oral or topical
Often in combination
Safe in pregnancy
MOA: unknown??
Immune-modulatory
Anti-bacterial, anti-viral?
Problem: None
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Sulfur compounds: 2% sulfur in UEA
Cost-effective
MOA: anti-bacterial, anti-parasitic, anti-fungal, anti-inflammatory
Problems: smell
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Gel or cream formulations
MOA: anti-bacterial, anti-inflammatory
Problems: Dry skin, irritation
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MOA: keratolytic agent (sloughing of dead skin cells).
Problems: Irritation
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Used for acne, wounds, infection, fungal infection
MOA: anti-bacterial, anti-viral, anti-fungal, anti-inflammatory
Problems: slower onset of action compared to benzoyl peroxide, sensitivity
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Topical treatment plus Antibiotics
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an adequate dose of antibiotic should be given for at least three months before deciding that a patient has failed to respond
after three months therapy then a reduction of acne lesions by 30-50 per cent should have occurred(pt assessment)
Good response? continued for a further three months and then the patient maintained on an appropriate topical regimen
Poor response to oral antibiotic therapy then an alternative antibiotic may be substituted
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MOA: bacteriostatic, anti-inflammatory
First line – Tetracycline (no longer used)
2nd line- doxycycline (abdominal cramping, nausea, vomiting), minocycline(causes SLE), lymecycline (abdominal cramping)
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Take with probiotic
Not to be taken with food
Warn females about vaginal thrush
Can have a flare when commencing treatment
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MOA: bactericidal activity (2 agents).
Most effective due to lack of resistance (2 agents).
Can be effective on those who failed on tetracycline treatment (different sites of sebum production, less resistance).
S/E: GIT disturbance, drug reaction.
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Must be a combination OCP (oestrogen and progesterone)
Often regarded as an adjunctive therapy in acne
Indicated in PCOS, CAH, idiopathic hirsutism
Often combined with cyproterone acetate (25-100mg day 5-19)
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MOA: reduces sebum production by an anti-androgenic effect.
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Mild Side effects:
Headaches
Nausea
Breast tenderness
Weight gain
Often pass in a few months
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Severe side effects:
Thrombosis (minimally raised with the progesterone drospironone)
Risk greatest in first year and as you get older.
Over 35 years use a low oestrogen pill
Strokes
Heart attacks
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Smoking
History of thrombosis or cardio-vascular disease
Family history of blood clotting disease or abnormal clotting
Anti-phospholipid syndrome
Severe migraines
Diabetes
Hypertension, hypercholesterolaemia
History of thromboplebitis
Immobilisation
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Results have not been consistent
hepatic and endometrial cancer
breast cancer
in younger users, returns to normal 10yrs after stopping it
cervical cancer (? Increased sexual activity in Pill users)
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Must be taken every day
Diarrhoea and vomiting decrease effectiveness
Anti-epileptics, anti-virals may interfere with it.
No clear evidence that antibiotics interfere with OCP.
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Takes time to work
Family Planning Association of UK, safe to take OCP until 50yrs of age.
Weigh up benefits and risk factors
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Many patients will be treated with oral isotretinoin.
If this is not suitable, the following may be used:
High dose oral antibiotics for six months or longer
In females, especially those with polycystic ovary syndrome, oral antiandrogens such as OCP or spironolactone may be suitable long term. Systemic corticosteroids are sometimes used for their antiandrogenic effect.
Flutamide and finasteride also been reported to be of benefit in hyperandrogenic women, though not licensed
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MOA:
Reduces sebum secretion and shrinks sebaceous gland
Anti-bacterial
Promotes normal keratinisation of hair follicle
Anti-inflammatory
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Side effects
Teratogenic
Dryness, nosebleeds, dry lips
Body aches and pains
Hair falling out
Staph carriage increased: boils etc
?? Depression, mood changes
May fall pregnant 1 month after stopping Isotretinoin
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Blood tests: βHCG. LFTs (ALT, AST), Lipogram (Total cholesterol, triglycerides)
Repeat at 3 months
Dose: 0,5-1mg/kg/day
Cumulative dose: 120-150mg/kg
Low dose?
Take with biggest meal of the day
For greater efficacy bd dosing should be used
Cortisone on commencement
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Sunlight is anti-inflammatory and can help briefly. Beware of skin cancer.
Cryotherapy Intralesional steroid injections Comedones can be expressed by cautery or
diathermy. Microdermabrasion can help mild acne. Lasers and light systems (blue light) X-ray treatment-no longer recommended
for acne as it may cause skin cancer. Photo-dynamic therapy
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Topicals
Zinc and Erythromycin
Sulfur
Oral meds
Erythromycin
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Will resolve in 9-12months
Topical depigmenting agents can speed up recovery
Fractionated lasers can resolve PIH in 3-5 sessions.
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Hypertrophic:
I/L steroids
Fractionated laser and rub steroid in
Atrophic
HA fillers
Fractionated laser
CO2 laser
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Immediate referral indicated (within a day): have a severe variant of acne such as acne
fulminans or gram-negative folliculitis Urgent referral have severe or nodulocystic acne and could
benefit from oral isotretinoin have severe social or psychological
problems, including a morbid fear of deformity
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Routine referral At risk of or are developing scarring despite
management have moderate acne that has failed to
respond to treatment which has included two courses of oral antibiotics, each lasting three months.
are suspected of having an underlying endocrinological cause for the acne (such as polycystic ovary syndrome) that needs assessment
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